Smoke cleared

The Smoke cleared condition passes when one or more smoke sensors are no longer detecting smoke. After a smoke event, the last thing you want is to restore normal lighting or send an all-clear while one room still has hazy air. This condition acts as your safety gate, letting your automation continue only after every sensor in the house confirms the air is clear again.

Using this condition from the user interface

If you prefer building automations visually, Home Assistant walks you through this condition step by step. You pick what to check, tweak a few options, and save. No YAML knowledge required.

To use this condition in an automation:

1. Go to Settings > Automations & scenes.
2. Open an existing automation, or select Create automation > Create new automation.
3. In the And if section, select Add condition.
4. Select what you want to check. Under By target (see Targets), pick the area your smoke sensor is in (like your kitchen or garage). You can also select a floor, a device, a specific entity, or a label.
5. From the conditions shown for that target, select Smoke cleared.
6. Under Condition passes if (see Behavior), pick Any or All to control how the check behaves when multiple sensors are targeted.
7. Select Save.

Options in the UI

Using this condition in YAML

If you work directly in YAML, or you want to know exactly what Home Assistant does under the hood, this section has the technical reference. It lists the field names you use in YAML, their types, and which ones are required.

In YAML, refer to this condition as air_quality.is_smoke_cleared. A basic example looks like this:

condition: air_quality.is_smoke_cleared
target:
  entity_id: binary_sensor.kitchen_smoke

This passes when the kitchen smoke sensor is no longer detecting smoke.

Options in YAML

YAML sometimes provides additional options for more complex use cases that are not available through the UI.

Targets

This condition supports targets. A target tells Home Assistant what the condition should check. You can point it at a single entityAn entity represents a sensor, actor, or function in Home Assistant. Entities are used to monitor physical properties or to control other entities. An entity is usually part of a device or a service. [Learn more], a device, an area, a floor, or a label, and Home Assistant evaluates every matching air_quality entity behind that target.

• Entity: one specific air_quality entity, such as air_quality.living_room.
• Device: every air_quality entity that belongs to a device.
• Area: every air_quality entity in a room or area.
• Floor: every air_quality entity on a floor.
• Label: every air_quality entity that shares a label.

You can also mix target types in one condition. For example, combine a specific entity with an area to check both at once.

Behavior with multiple targets

When you target more than one entity (or select an area, floor, or label that contains several), the Condition passes if option controls how the results combine:

• Any (default): the condition passes if at least one of the targeted entities matches. For example, if you check three smoke sensors and only one of them detects smoke, the condition still passes. This is useful for questions like “is there smoke anywhere in the house?”
• All: the condition passes only when every targeted entity matches. For example, if you check the same three smoke sensors, the condition passes only once all three report cleared. This is useful for “is the entire house safe now?” checks, so your automation does not send an all-clear while one room still has a reading.

Good to know

• Sensors that are unavailable (unavailable) or have an unknown state (unknown) do not count as cleared. With Any behavior, they are skipped. With All behavior, the condition fails if every targeted sensor is unavailable.
• To check whether smoke is currently detected, use Smoke detected.

Try it yourself

Ready to test this? Go to Settings > Automations & scenes, open an automation, and add this condition. Trigger the automation with and without the condition met, and watch whether it continues or stops.

More examples

Real scenarios where this condition gates an automation. Copy any example and adapt it to your setup.

Automation: only restore normal lighting once every smoke sensor has cleared

After a smoke event, you want to keep the emergency lights on until every room is safe. This automation triggers when you press the reset button, but the condition requires every smoke sensor to read clear before the normal lighting scene restores. If any sensor still detects smoke, the emergency lights stay on.

• Trigger: State: Reset lighting button pressed
• Condition: Air Quality: Smoke cleared
• Target: All smoke sensors (kitchen, hallway)
• Condition passes if: All
• Action: Scene: Turn on (normal lighting), then notify

alias: "Restore lights only after full smoke all-clear"
triggers:
  - trigger: state
    entity_id: input_button.reset_lighting
conditions:
  - condition: air_quality.is_smoke_cleared
    target:
      entity_id:
        - binary_sensor.kitchen_smoke
        - binary_sensor.hallway_smoke
    options:
      behavior: all
actions:
  - action: scene.turn_on
    target:
      entity_id: scene.normal_lighting
  - action: notify.mobile_app_phone
    data:
      title: "Smoke all-clear"
      message: >
        Every smoke sensor reads clear.
        Normal lighting has been restored.

Still stuck?

The Home Assistant community is quick to help: join Discord for real-time chat, post on the community forum with the condition you’re using and what you expected to happen, or share on our subreddit /r/homeassistant.

Related conditions

These conditions work well alongside this one:

• Smoke detected - Tests if one or more smoke sensors are detecting smoke.